Tim Challies is my mentor and pastor. I want to be like him when I finally grow up.   He is a blogger at Challies.com. He’s the co-founder of Cruciform Press. And he’s the author several books, including Sexual Detox: A Guide For Guys Who Are Sick of Porn (2010), Do More Better: A Practical Guide to Productivity (2015), and Visual Theology: Seeing and Understanding the Truth About…